Class CB Transfer Switch for Automatic Change and Recovery with Overcurrent Release 1-63A
Class CB
ATSE with overcurrent release
Its main contact can be closed and used to break short-circuit current
WATSN series automatic transfer switch is a class CB automatic transfer switch if it
adopts a circuit breaker with overcurrent release as the actuator. With selective
protective function, it can provide short-circuit and overload protection for
downstream loads and cables. Its making and breaking capacity is significantly
higher than other components such as contactors and relays.


Wide application
● Used in AC220V and AC380V systems
● Three operation modes configurable on the site: automatic change and automatic
recovery, automatic change without automatic recovery, and mutual standby.
● Can be easily connected to a smart monitoring system
High-performance product
● High breaking capacity (class CB)
● Operation breaking capacity is equal to 100% of ultimate breaking capacity (class
CB)
● Provide high current-limiting capacity and total economic selectivity (class CB)
● Provide high short-circuit making capacity and rated short-time withstand capacity
(class PC)
Easy connection and installation
● No need to derate in both horizontal and vertical installation
● No need to derate for lower incoming lines
Higher reliability
● Alarm for wrong neutral connection
● Automatic signal cutoff in case of unsuccessful transfer
Smart communication
● RS485 communication interface and Modbus-RTU communication protocol
● Provide four remote functions including telecommand, telemetry, telecontrol, and
telereg